Racism in football – Racism has long been a stain on football but a resurgence of incidents in recent years has prompted soccer's authorities to launch a renewed bid to rid the game of discrimination for good. Here a Fenerbahce fan holds a banana towards Galatasaray's Ivory Coast striker Didier Drogba during a Turkish league match in May 2013.
Racism in football – The spark for a raft of racism reforms from the game's power brokers came when AC Milan midfielder Kevin-Prince Boateng walked off in a match with Italian lower league side Pro Patria in January after their fans abused him with monkey noises. The game was abandoned and his protest made headline news the world over.
Racism in football – CNN's Pedro Pinto stands on the spot where Boateng decided he'd had enough. He told the World Sport Presents Racism in Football documentary: "I decided to walk off the pitch because I said to myself, in this kind of environment, in this situation, I don't want to play football anymore."
Racism in football – Boateng's AC Milan teammate Mario Balotelli has been the subject of racial abuse over a number of years. He and Boateng were abused by AS Roma fans during a match at the San Siro in May that was briefly suspended by the officials as a result. A public address announcement implored visiting supporters to stop their chants.
Racism in football – Balotelli has had to deal with racism throughout his career. As far back as 2009, when he played for Inter, he was racially abused by opposing Juventus fans. Here, Inter's fans hold up banners in support of the striker.
Racism in football – Balotelli told Pedro Pinto he was prepared to walk off if he receives more racial abuse: "After what happened to me in (the Roma) game, I felt a little bit alone when I was home. I always said that if that happened in the stadium, like if nobody said anything, I don't care. But this time I think I changed my mind a little bit, and if it is going to happen one more time, I'm going to leave the pitch because it's so stupid."
Racism in football – Boateng's walk-off prompted the game's governing body to act and FIFA president Sepp Blatter invited the midfielder to sit on a task force dedicated to tackling racism in football. A raft of reforms have now been passed that could see teams relegated or expelled from competitions.